US2000036A

US2000036A - Tire mounting machine

Info

Publication number: US2000036A
Application number: US673676A
Authority: US
Inventors: O H Renfro
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-05-31
Filing date: 1933-05-31
Publication date: 1935-05-07
Anticipated expiration: 1952-05-07

Description

y 7, 1935. o. H. RENFRQ 2,000,036

v TIRE MOUNTING MACHINE 2 Shets-Sheet 1 Filed May 31, 1933 JVVENTUA May 7, 1935. o. H. RENFRO TIRE MOUNTING MACHINE 2 Sheets-Sheet 2 Filed May 31, 1953 j /v VENIDAL i Q HEENFE D lTIUENE'YEL the conventional balloon tiretire causes the wheel onwhich the tire is to be Patented May 7, 1935 ears-NT FFIE 'rrma: MomvTnvG. MACHINE H. Rena, South Gate,'Calif. I Applica tion May 31, 1933, semi Nohcvasvc 5, Claims. (01. 14.45288) mounting machines.

An'object of the invention is to provide a 0011-:- struction on which a vehicle wheel, such as an automobile wheel, canbe easily mounted to facile itate removal and replacement of'tires thereon. Recently a new type of tire has been placed on the market generally known as an air wheel. This type of tire'is extremely large, as compared with its circumference and-is much larger than This'inventionrelates to' improvements in tire mounted to be made very smallwith the result that when it is necessary-to remove or replace tires on these extremely. small wheels difliculty is encountered inso doing. It is'extremely diffi- 'cult to remove andreplace the tire on the wheel while the wheel remains on the car and the cus tomary practice is to'remove the wheelfrom the car before attempting to remove the tire from the wheel. Inasmuch the wheels' are' very small, diflicultyis' encountered in grasping the wheel in' such a manner as to enable aneasy re:

movalof the tire therefrom, The improved construction has been primarily designed toenable the wheel to be clamped in a stationaryposition in such a manner as to enable the"tire--to be easily removed and easily replaced. r

Another object of the invention is to so design a constructionof this character that it'may receivewheels of the-variousshap-es and designs which are now conventionally used'on automobiles; In other words it is the intention that the improved construction be of universal applica-' tion to the various types oiwheelsnow used and which carry these unusually large size tires:

w With the foregoing and other objects in view,

which will be made manifest in the following de tailed description, and specifically pointed out in the appended claims, reference is had'to the accompanying drawings for an illustrative embodiment of the invention, wherein: 7 Fig. 1 is a view in sideelevation, parts being broken away and shown insection, illustrating the improved tire mounting machine f Fig. 2 is a top plan view of the machine','the

. wheel and tire being shown ashaving been removedtherefrom. c I Fig. 3 is a sectional view taken substantially upon the line 33 upon Figure 1 in the direction indicated. f I

' Fig, 4 is a view illustrating a-modified type of clamping head; which may be used to bear a clamp-upon forms of wheels that require this type of construction. r

The size of ;the j the clamping construction shown on Figure 2 as having been removed therefrom and parts of the construction renderingit adaptable-.to' thetype of wheel shown on'Figure 6.

.Fig. 5 is a'view similar to Figure 2', illustrating 'Fig. 6 illustrates the manner in'which the con:

struction shown in detail in Figure 5 is ,usedon a wheel which does not have a'removable jhub I cap. v 'Referring to the accompanying drawings,

wherein similar reference characters designate similar parts throughout, the improved tire mounting machine comprises a circular table 1 l0 having a rectangular or square projection H' on the under side thereof at' about its center. Legs l2, which may be formed of angle irons, are secured to this projectionand serve to support the table. These legs preferably are secured-to the corners of the projection as by bolts I3 and may be bolted to the floor, as indicated, by bolts 14. On the top of the table there is preferably a central cylindrical upstanding projection 55; "A central bore It extends through the table anda clamping rod I! is slidable therein. Thisclamp ing rod has a link I8 pivotally secured asat M to itslower end and this link in turn connected as at toa yieldable or bendable lever 2|. This lever is'fulcrumed as at 22 on. one of the legs [2 and has its swinging ends twisted as at 23 to present an upstanding edge'24, see Figure 3, which'is receivable in any one ofthe-teeth of-ara'tchet bar 25. Ratchet bar 25 isfas'te'ned to one of thelegs l2 and lever 2! is kept adjacent it by meansaof a guard 26. At the upper end i of clamping rod I! there is apivoted head 21 and beneath this there is provided a hubspanning member 28. This hub spanning member "is of concave-convex shape, as clearly shown on Figure 1, and has the'outline shown on Figure 2'. It" has an elongated slot '29 formed centrally thereof through which-head 2! can be passed; As a meansfor lifting-lever 2 I link I 8 a'nd'clamping rod l1, when lever. 2! is disengagedfrom the ratchet, a suitable spring 30 may be used to conshown on Figure 2. The operator then steps on 2| is swung into engagement with one of theratchet teeth on the ratchet bar 25. 'In this way conventional manner. disengagement of the lever from the ratchet re leases nmd enables spanning member over head 21, "ilhe wheel canthen be removed the flexing of the lever 2| maintains atension on clamping rod l|, holding the wheelW tightly against the table as longas the ratchet is en gaged. .When the wheel is thus clampedfit is possible to remove the tire T quite easily. in? the Upon replacing the. tire,

28 to he reverselyturned so thatit may be slipped fromthe table.

It will be noted the-construction-is such that imelamping theiwheelagainst the table, the hub is'so rmga'gdgthatthe finish thereon will. not be marred' in-a-ny. way. 7 V With some types of wheels because of the natmie of hubconstructions it is desirable toahave a difierent style *ofspamiing member.

the construction isiequipped with Ia separate spanning member as shown onFigur'e 4.

. This meneiy-consistsof a transverse bar SL-Which may bemused toxslide: through slot 32 in the top of clamping' rod ll. fastened to one end of this barisa transverse bar sswhioh rests'onthe' hub.

' Asieparate bar 34.; which is :a'co unterpart'of bar ilis-merely Positioned beneath-theopposite end of-bar ii lanrlf is held downagain'st the hub by bar il being damped thereagainst. This form of warming means is more advantageously em:- ploy-ed on certain styles of; wheel construction thanithe'spanningmeans disclosed at28.

Some styles ofwheel construction; now being employedare similar to that sliown'on-Figure 6 whereinthe tire T is'mounted-on'wheel W having-a-hub H with ai'permanently -attached hub mp; "It is desirable to be'able'to use the same construction-for fastening 'a wheel of this charaeter in placerwhile the tire is being removed. In-this-style of wheel-, the hubis usually provided with a plurality of apertures therethrough 'for the receptionof lug bolts foriast'ening the wheel iii-place on: the-vehicle; I take advantage of this construction and 'formtwo -apertures 35 and 36 whioh-extend through the'table. These apertures "are located at different radial distances irom-the centerof thetable.-" On the-opposite side of'the -table there is-formed a' diagonal slot aboutaperture 35 as a center,bolt"39 can be prdperly'liropped'inthe slot. The two bolts '38 and}! have shoulders 40 formed thereon which fe ng'age the top or outer side of the hub. Their lower endsfare-longitudinally slotted as at 4| to receive tapered Wedges 42 which are driven thereo,ose

through. When the wedges are driven, they clamp the wheel in position on the table, in which position the tire can be removed and replaced. In the event that a wheel having a larger sized hub is to have its tire removed and replaced, bolt 38 instead of being dropped through aperture 35 is dropped through aperture 36, which is a greater distance from the center of the table. Bolt 39 is dropped through an aperture in the hub and through slot 3?. The slot-enables adjustments of the various parts to accommodate the wheels of various sizes. V From the above describedconstruction it will be appreciated that a novel and advantageous :tire mounting machine is provided, which enables l the clampingiof a wheel in place against the table or face plate I 0. The wheel is clamped by meansof thehub such a manner as not to mar .the paint or finish and a tension is continually maintained to hold the wheel in place. With the wheelrttms; stationarily mounted, there is free access to the tire, enabling it to be easily removedifrom thexwheel and tube replaced;

Narious'bhanges be made in the details of constructionwithout departing from the spirit on-scope of the invention as defined by the. appended clalms. a T I claim: g 1. A tire mounting maoine comprising means providing surfaceagainst which a wheel may 7 be positioned, means movable through the surface adapted to be -extended through the hub of the wheel, aspanning means adapted to be connected 'to saidmova'ble means and caused thereby to press thewheel against the surface, means for imposing a tension upon themovable" means including a' bendablelever. and means 'for releasably holding the lever depressed.

' 2. A tire mounting machine comprising means providing a table against which a wheel may'be positioned,a clamping rod slidable through the table having a; head, a spanning means adapted to be connected to the-head and caused thereby topress the wheel against the tabl'e, a bendable lever, 'means connecting the clamping rod and bendable lever, and ratchet'means forl holding the lever depressed."

3. A tire mounting machine comprising'mans providing a table upon which a wheel maybe positioned with"its tire 'disposedbutwardly of and beyond the edge of the table, a clamping 7 rod slidably extending through the "table andnormally extending ther'eaboveiso as to be extended through the hub of the wheel, spanning means associated with the upper end of the clamping rod by which the'wheel may be clamped. solidlyagainst the table, and means for imposing a downward tension onthe clamping rod to cause it to clamp the wheel solidly against the table.

4. A tire mounting machine comprising means providing table upon which a wheel may be positioned with its tire disposed outwardly of and beyond the edge of the'table, a clamping rod slidably extending through the table and normally. extending thereabove'so as to be extended through the hub of the, wheel, spanning means associated, with the upper. end of the'j'clampin'g rod, by whichthe wheel may, be clamped solidly against the table, means for imposing -a downward tension on the clamping rod to cause it to clamp the wheel solidly against the table,-a bendable lever fulcruined adjacent one end and having ratchet means releasably holding the other end in position, and a link pivotally connected to the clamping rod and lever whereby the clamping rod may be pulled downwardly to clamp the wheel solidly against the table.

5. A tire mounting machine comprising means providing a table upon which a wheel may be positioned with its tire disposed outwardly of and beyond the edge of the table, a clamping rod slidably extending through the table and normally extending thereabove so as to be extended through the hub of the wheel, spanning means associated with the upper end of the clamping rod by which the wheel may be clamped solidly against the table, means for imposing a downward tension on the clamping rod to cause it to clamp the wheel solidly against'the table, a bendable lever fulcrumed adjacent one end and having ratchet means releasably holding the other end in position, a' link piyotally connected to the clamping rod and lever whereby the clamping rod' maybe pulled downwardly to clamp the wheel solidly against the table; and

springmeans urging the clamping rod, link, and 10 I leverintouppermost positions, V

o. H, ammo.